Explanipedia

Theoretical Approaches to Rebalancing the Balance of Payments: A Literature Review Open

A. Diallo · 2025

The issue of rebalancing the balance of payments has received ongoing attention in economic literature, prompting the development of various theoretical frameworks aimed at restoring external equilibrium. This review critically examines th…

Cryogenically enhanced quasi-optical resonator for megawatt pulsed millimeter-wave sources Open

C. Panisset, A. Diallo · 2025

We report the design, cryogenic optimization, and performance modeling of a compact quasi-optical ring resonator intended to compress microwaves pulses at 170 and 250 GHz to the megawatt level. By combining ultra-low-loss CVD diamond and g…

Evolution of intermittent filaments in the scrape-off layer of NSTX Open

M. Lampert, A. Diallo, J. R. Myra · 2025

Filamentary structures naturally arise from background turbulence in the scrape-off layer (SOL) of plasmas, leading to significant particle and heat transport that can degrade overall plasma confinement. This enhanced transport can contrib…

Persistence of Deuterium and Tritium Nuclear Spin-Polarization in Presence of High-Frequency Plasma Waves Open

J. W. S. Cook, H. Ali, J. F. Parisi, A. Diallo, Nicolas Faatz · 2025

We present first-principles numerical calculations of the depolarization rate of spin-polarized deuterium and tritium nuclei in realistic tokamak plasmas, driven by resonant interactions with plasma waves. Backed up by first-of-a-kind line…

Active tungsten expulsion in ELM-absent H-mode plasmas via on-demand ELM triggering with lithium granule injection Open

Zhen Sun, R. Maingi, Yunxin Cheng, Yuzhong Qian, Wei Xu , et al. · 2025

Lithium granules gravitationally injected into the upper X -point region demonstrated on-demand edge-localized modes (ELM) triggering in otherwise ELM-suppressed H-mode plasmas on the Experimental Advanced Superconducting Tokamak. Sub-mm l…

Plasma modification through boron particulate injection in the full tungsten environment of WEST Open

R. Lunsford, A. Gallo, K. Afonin, P. Moreau, A. Diallo , et al. · 2025

Recent experiments have confirmed the compatibility of extended boron particulate injections with high performance plasma discharges in the full tungsten (W) environment of WEST. Utilizing an impurity powder dropper (IPD) equipped with bor…

Duplication gastrique chez le nourrisson à propos d’un cas au Mali Open

MB Coulibaly, Mahamadou Diassana, S Diaby, B Traoré, K Mallé , et al. · 2025

Introduction : Les duplications de l’appareil digestif sont des malformations congénitales rares en particulier gastrique. La symptomatologie est peu spécifique et le diagnostic est histologique. Cas clinique : nourrisson de 17 mois de sex…

Neutronics analysis of spin-polarized fuel in spherical tokamaks<sup>*</sup> Open

Jin Whan Bae, Katarzyna Borowiec, Vittorio Badalassi, J. F. Parisi, A. Diallo , et al. · 2025

The effect of spin-polarized deuterium–tritium fuel on the blanket, magnets, and surrounding structures is analyzed for a spherical tokamak fusion power plant. The focus of this paper is the neutron flux distribution in the fusion device a…

POLYSACCHARIDE AS ECO-FRIENDLY GATE DIELECTRIC FORORGANIC FIELD EFFECT TRANSISTORS Open

A Tall, Mohamed S. Manga, Moussa Touré, Shinichi Haba, A. Diallo , et al. · 2025

This article presents a comprehensive literature review on the use of polysaccharides as dielectric materials in organic field-effect transistors (OFETs). The dielectric properties of various polysaccharides-such as cellulose and its deriv…

Progress in pedestal and edge physics: Chapter 3 of the special issue: on the path to tokamak burning plasma operation Open

M.E. Fenstermacher, L. R. Baylor, E. de la Luna, M. Dunne, G.T.A. Huijsmans , et al. · 2025

This paper describes the extensive progress that has been made in the understanding of tokamak pedestal physics since the 2007 publication of ‘Progress in the ITER Physics Basis’ (Ikeda 2007 Nucl. Fusion 47 E01–S500). It serves as Chapter …

Revisiting Fusion in D-${}^{3}$He Plasmas With Spin-Polarized Fuel Open

J. F. Parisi, A. Diallo, Samuele Meschini · 2025

Spin-polarized fuel (SPF) is recognized for enhancing fusion reactivity, but it could provide other advantages particularly relevant to advanced fusion fuels. In this work, we calculate how SPF in D-${}^3$He plasmas affects not only D-${}^…

Geometric optimization of a blood pump impeller using the Taguchi method: CFD analysis and experimental evaluation Open

A. Diallo, Rafet Yapıcı, Ömer İncebay, Hasan Çınar · 2025

Rotodynamic Left Ventricular Assist Devices (LVADs) are critical in managing severe heart failure by providing mechanical circulatory support. Improving these blood pumps' efficiency is crucial for both lowering the device's energy consump…

Simulations of self-magnetization in expanding high-energy-density plasmas Open

K. V. Lezhnin, Samuel Totorica, Jesse Griff-McMahon, Mikhail Medvedev, H. Landsberger , et al. · 2025

Understanding plasma self-magnetization is one of the fundamental challenges in both laboratory and astrophysical plasmas. Self-magnetization can modify the plasma transport properties, altering the dynamical evolution of plasmas. Most hig…

Electric Power Enhancement using Spin-Polarized Fuel in Fusion Power Plants Open

J. F. Parisi, A. Diallo · 2025

Using a range of fusion power plant (FPP) concepts, we demonstrate that spin-polarized fuel (SPF) can significantly enhance net electric power output, often by many multiples. Notably, the electric power gain from SPF generally exceeds the…

Doubling fusion power with volumetric optimization in magnetic confinement fusion devices Open

J. F. Parisi, J.W. Berkery, A. Sladkomedova, S. Guizzo, M. R. Hardman , et al. · 2025

A technique, volumetric power optimization, is presented for enhancing the power output of magnetic confinement fusion devices. Applied to a tokamak, this approach involves shifting the burning plasma region to a larger plasma volume while…

Particle-in-cell simulations of expanding high energy density plasmas with laser ray tracing Open

K. V. Lezhnin, Samuel Totorica, A. Hyder, Jesse Griff-McMahon, Marissa Adams , et al. · 2025

The design and analysis of high energy density (HED) laser experiments typically rely on radiation hydrodynamics simulations. However, some laser–plasma interaction regimes are not collisional and cannot be adequately modeled with hydrodyn…

Comparison of plasma start-up with high Z and low Z first wall in WEST Open

Christophe Guillemaut, K. Afonin, G.M. Bodner, J. Bucalossi, Y. Corre , et al. · 2025

The choice of first wall material is of paramount importance for the plasma start-up conditions in ITER and future fusion power plants. In this context, the present work focuses on the correlations between first wall impurity sources and t…

Prediction of Electric and Magnetic Fields from Spectral Data Using Machine Learning Algorithms for Doppler-Free Saturation Spectroscopy Diagnostics Open

Boting Li, E. H. Martin, R.M. Churchill, A. Diallo · 2025

Влияет ли добыча полезных ископаемых открытым способом на загрязнение речных экосистем тяжелыми металлами и природным радионуклидом Po-210 (исследования на примере реки Фатала, Гвинейская Республика)? Open

Н. Ю. Мирзоева, В. Ю. Проскурнин, Ibrahim Keita, A. Diallo, Roman Gorbunov , et al. · 2024

Актуальность работы. Оценка влияния добычи бокситовых руд открытым способом в Гвинейской Республике на уровень загрязнения тяжелыми металлами и природным радионуклидом 210Po экосистемы реки Фатала проводится впервые, что определяет актуаль…

SYNTHESIS AND MORPHOLOGICAL FEATURES OF MATERIALS BASED ON IRON(III) AND COBALT(II) COMPOUNDS Open

A. A. Karaseva, A. Diallo, D. V. Filippov, А. С. Вашурин · 2024

Zeolite-like frame materials based on 2-ethylimidazolate of cobalt (II), iron (III) terephthalate and cobalt (II) terephthalate were synthesized using the direct mixing method and the solvothermic method. The obtained materials are charact…

Analysis of fluid forces impacting on the impeller of a mixed flow blood pump with computational fluid dynamics Open

A. Diallo, Hasan Çınar, Rafet Yapıcı · 2024

This study presents four different impeller designs to compare hydrodynamic forces. Numerical simulation studies are performed via computational fluid dynamics to specify and investigate the hydraulic forces impacting the impeller of the m…

In search of X-point radiator regime features in NSTX and DIII-D discharges with the snowflake divertor Open

V. Soukhanovskii, S. L. Allen, M.E. Fenstermacher, C.J. Lasnier, A.G. McLean , et al. · 2024

Experimental data from NSTX and DIII-D discharges with the snowflake (SF) divertor configurations are analyzed toward the development of the X-point radiator (XPR) concept. The XPR divertor regime was recently realized in standard divertor…

Tritium-Lean Fusion Power Plants with Asymmetric Deuterium-Tritium Transport and Pumping Open

J. F. Parisi, Samuele Meschini, A. Rutkowski, A. Diallo · 2024

Asymmetries in deuterium-tritium (D-T) particle transport and divertor pumping speeds are shown to enhance tritium self-sufficiency in fusion power plants. Using a diffusive particle transport model that links the plasma core, separatrix, …

Particle-in-cell simulations of expanding high energy density plasmas with laser ray tracing Open

K. V. Lezhnin, Samuel Totorica, Abdullah Hyder, Jesse Griff-McMahon, Marissa Adams , et al. · 2024

The design and analysis of high energy density (HED) laser experiments typically rely on radiation hydrodynamics simulations. However, some laser-plasma interaction regimes are not collisional and cannot be adequately modeled with hydrodyn…

Simultaneous enhancement of tritium burn efficiency and fusion power with low-tritium spin-polarized fuel Open

J. F. Parisi, A. Diallo, J. Schwartz · 2024

This study demonstrates that using spin-polarized deuterium-tritium (D-T) fuel with more deuterium than tritium can increase tritium burn efficiency (TBE) by at least an order of magnitude without compromising fusion power output, compared…

Design of a Thomson scattering diagnostic for the SMall Aspect Ratio Tokamak (SMART) Open

Manjit Kaur, A. Diallo, B.P. LeBlanc, J. Segado-Fernández, E. Viezzer , et al. · 2024

We describe the design of a Thomson scattering (TS) diagnostic to be used on the SMall Aspect Ratio Tokamak (SMART). SMART is a spherical tokamak being commissioned in Spain that aims to explore positive triangularity and negative triangul…

Applicability of alkali beam emission spectroscopy on NSTX-U Open

M. Lampert, G. Anda, Ö. Asztalos, J.W. Berkery, A. Diallo , et al. · 2024

Understanding fast pedestal dynamics and turbulent transport in the edge and scrape-off layer (SOL) plasma of spherical tokamaks is crucial for the design and operation of future fusion reactors. The alkali beam emission spectroscopy diagn…

Utilization of boron particulate wall conditioning in the full tungsten environment of WEST Open

R. Lunsford, A. Gallo, P. Moreau, A. Diallo, K. Afonin , et al. · 2024

Over a series of experiments performed on the WEST device we have demonstrated the ability to perform controlled impurity injections and improve overall wall conditions. Positive changes to overall machine conditions are evidenced by reduc…

Boron powder injection experiments in WEST with a fully actively cooled, ITER grade, tungsten divertor Open

K. Afonin, A. Gallo, R. Lunsford, Sayak Bose, Y. Marandet , et al. · 2024

The formation of an radial edge electric field due to finite ion orbit width effects is the possible root cause of the H-mode edge Open

G. Krämer, A. Bortolon, A. Diallo, R. Maingi · 2024

Full orbit-following simulations of thermal ions show that finite ion-orbit width effects create charge separation near the last closed flux surface (LCFS) which generates a localized radial electric field. Experimentally, edge electric fi…

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